inspector/scripts/inline-and-minify-stylesheets-and-scripts.py

   1 #!/usr/bin/env python
   2 #
   3 # Copyright (C) 2013 Apple Inc. All rights reserved.
   4 #
   5 # Redistribution and use in source and binary forms, with or without
   6 # modification, are permitted provided that the following conditions
   7 # are met:
   8 # 1. Redistributions of source code must retain the above copyright
   9 #    notice, this list of conditions and the following disclaimer.
  10 # 2. Redistributions in binary form must reproduce the above copyright
  11 #    notice, this list of conditions and the following disclaimer in the
  12 #    documentation and/or other materials provided with the distribution.
  13 #
  14 # THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
  15 # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  16 # THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  17 # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
  18 # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  19 # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  20 # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  21 # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  22 # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  23 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  24 # THE POSSIBILITY OF SUCH DAMAGE.
  25
  26 # This script inlines and minifies external stylesheets and scripts.
  27 #  - <link href="..." rel="stylesheet"> => <style>...</style>
  28 #  - <script src="...">                 => <script>...</script>
  29
  30 import cssmin
  31 import jsmin
  32 import os.path
  33 import re
  34 import sys
  35
  36
  37 def main(argv):
  38
  39     if len(argv) < 2:
  40         print('usage: %s inputFile outputFile' % argv[0])
  41         return 1
  42
  43     inputFileName = argv[1]
  44     outputFileName = argv[2]
  45     importsDir = os.path.dirname(inputFileName)
  46
  47     inputFile = open(inputFileName, 'r')
  48     inputContent = inputFile.read()
  49     inputFile.close()
  50
  51     def inline(match, minifier, prefix, postfix):
  52         importFileName = match.group(1)
  53         fullPath = os.path.join(importsDir, importFileName)
  54         if not os.access(fullPath, os.F_OK):
  55             raise Exception('File %s referenced in %s not found' % (importFileName, inputFileName))
  56         importFile = open(fullPath, 'r')
  57         importContent = minifier(importFile.read())
  58         importFile.close()
  59         return '%s%s%s' % (prefix, importContent, postfix)
  60
  61     def inlineStylesheet(match):
  62         return inline(match, cssmin.cssminify, "<style>", "</style>")
  63
  64     def inlineScript(match):
  65         return inline(match, jsmin.jsmin, "<script>", "</script>")
  66
  67     outputContent = re.sub(r'<link rel="stylesheet" href=[\'"]([^\'"]+)[\'"]>', inlineStylesheet, inputContent)
  68     outputContent = re.sub(r'<script src=[\'"]([^\'"]+)[\'"]></script>', inlineScript, outputContent)
  69
  70     outputFile = open(outputFileName, 'w')
  71     outputFile.write(outputContent)
  72     outputFile.close()
  73
  74     # Touch output file directory to make sure that Xcode will copy
  75     # modified resource files.
  76     if sys.platform == 'darwin':
  77         outputDirName = os.path.dirname(outputFileName)
  78         os.utime(outputDirName, None)
  79
  80 if __name__ == '__main__':
  81     sys.exit(main(sys.argv))